RFA: PATCH to match.pd for c++/68385

[Jason Merrill]

On 11/21/2015 01:30 AM, Richard Biener wrote:
> What happens if we remove the nops stripping from integer_zerop?  Do other integer predicates strip nops?

Many predicates do, but removing that doesn't break anything in the 
testsuite.  So, how about this?


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